Diavision



A. J. CAVVLEIY Dec. 17, 19.

DIAvIsIoN original Filed March 19, 41951 i l INVENToR.

A TTORNEYS.

UNITED STATES PATENT' OFFICE Original application March 19, 1931, Serial No. 523,791. Divided and this application April 8,

1937, Serial No. 135,718

2 Claims.

The invention has for its object in general, the perception of objects by means of electric waves which are longer than the visible light waves, but which are much shorter than those used in present day broadcasting. Since such electromagnetic waves are subject to all of the laws ci reflection, refraction and polarization as are ordinary light waves, a beam of those waves is directed upon a body possessing the power of refracting them. An invisible image is formed of those reflected Waves, and this invisible image is converted into a visible image by means of the apparatus described in this application.

This application is a division of my application Serial No. 523,791, filed March 19, 1931, for Fog and mist penetrating device, Patent No. 2,155,471, April 25, 1939.

The waves may be generated by any ordinary means, such as by 'vacuum tubes, Hertzian resonators, induction coils, Hertzian vibrators, by an antenna or a plurality of antennae connected to suitable sources of high frequency alternating current. One of the main objects of the invention is the formation of images by means of electro- 5 magnetic waves, which images are converted into visual images, thus making it possible to perceive objects through mists, buildings, dry earth, and in fact through nonconductors in general.

The accompanying drawing forming a part of this specification are to be referred to, in which like reference characters have similar meanings in all of the views, and in which,

Figure 1 is an elevational cross sectional view of an apparatus forming invisible electromagnetic wave images and rendering those images visible and employing a rotating element.

Figure 2 is a view of a disk, which may be used in conjunction with the apparatus illustrated in Figure 1 by substituting it for the rotating element illustrated therein.

Figure 3 is a view of an apparatus for forming visible images from electromagnetic wave invisible images after the method illustrated in Figure 2.

Figure 4 is a. side view of Figure 3, showing the means carried en the surface of the cylinder for scanning the visible and invisible images.

Figure 1 illustrates a device employing a smaller number of rotating elements to produce the images. The apparatus consists of a casing D made of metal or covered with metal foil, for

the purpose of eliminating stray electromagnetic waves from the camera-like structure. A part of the casing is telescopically arranged as C. Thus an adjustable means is provided for focus- (Cl. Z50-1) sing the lens I. The electromagnetic waves reilected from the objects are received by lens I and focussed into an invisible image. In the plane of this image, there is a rotating disk E which turns upon shaft J, and connected to any suitable source of power by means oi pulley I2. This disk E is provided with a cylindrical peripheral portion which bears two collector rings h and i. On the left face of the disk there is a spirally arranged series of coils or antennae K, which traverse, or scan the invisible image, and have th'us generated in them alternating currents of varying intensity. One terminal of each of the coils is connected to collector ring H, while the other terminal of each coil is connected to a specific commutator segment of commutator u. Brush O plays on a commutator segment to which a coil which happens to be traversing or scanning the image field is connected. The square I9, of Figures 5 and 7 represents a detecting and amplifying circuit, which may be tuned to any wave length desired. The current generated in the coil K passes through wire to collector ring h, thence through brush q, which is in contact with collector ring h. It then passes through the wire connected to brush q to the detecting, amplifying and tuning circuit l0, and returns to brush o commutator u and back to coil K. Therefore, the current generated in a coil or antenna K is amplified by element I0 and transmitted by wires to brushes p and v. On the right hand side of the disk a series of spirally arranged glow lamps, such as neonl lamps l is arranged. One terminal of each lamp l is connected to collector ring i and the other terminal of each lamp l is connected to a specific commutator segment. An important fact is that the two spirals, one of coils and one of lamps, although concentrically arranged, have their corresponding points displaced relative to each other by an angle of degrees. The purpose of this is to produce a right side up luminous image opposite the window H, at the lower portion of the right side of the disk E. It will be seen that the current which has been amplifled, will be delivered by means of 4 the beginning of one spiral is in the upper portion of the disk E', while the beginning of the other spiral is in the lower portion, or displaced by 180 degrees.

Figure 2 illustrates a disk E' which may be substituted for the rotating -element in Figure 1. This disk is composed of metal and has two spigrals of holes or lenses f and r. A photoelectric cell or coil or antennae is placed between the disk and observer at I, assuming that the disk has been substituted for disk E in Figure 1. The lenses f may be of parailln, etc. The invisible image is produced at I, but the holes or lenses linut the area of it that is scanned at any instant. 'I'he photoelectric cell or antenna is connected to l0, Where the current is amplified and then delivered by suitable wires to the glow lamp at H. This glow lamp has its intensity varied in synchronism with the variations produced in the antenna at I, and glass lens r scans the lamp face in reverse order to that of the scanning by the parailln lenses f at I. Thus a luminous image is produced at H. The arrows indicate that the disk E rotates counterclockwise and that the upper image is scanned from right to left and from bottom to top, while the lower image is scanned from left to right and from top to bottom. Thus the inverted invisible image is converted into a right side up visible image, which is viewed at H.

Figure 3 is an illustration of a device similar to that of Figure 2, but differs in that a cylinder is u'sed having two helices of scanning apertures or lenses on its cylindrical surface. Lens I forms an invisible image through the aperture t upon photoelectric cell s or wire or coil of wire or antenna, as desired. C is the metallic casing which excludes the extraneous electromagnetic waves. The cylinder rotates on shaft J similar to disk E of Figure 2. The two juxtaposed helices on the cylindrical surface are relatively displaced by an angle of 180 degrees, as described above. The cylindrical surface of this cylinder at least should be made of metal. As the cylinder rotates, the invisible image is scanned as described in connection with the above figures. The result is that the photocell s has varying amounts of electric current generated in it; or the antennae has varying degrees of electric current generated in it. (A chopper may be included with the photocell in the well known manner.) The current is delivered to the ampliiier I0, and the amplied current is delivered tc neon or other glow lamp I. A separate helix scans the lamp area producing a visible image. This may be viewed through the aperture or frame in the partition w. Due to 180 degrees displacement in the two helices, a right side up image is produced at the neon lamp.

Figure 4 is a view of the cylindrical surface of the cylinder E", and shows the two juxtaposed helices consisting of holes or lenses r and f. 'Ihe dotted arrow at image area I shows that the helix scans from top to bottom and right to left. The full line arrow at H shows that the helix made up of holes f scans the image area at H from bottom up and left to right. However, as this cylinder is supposed to be placed in a horizontal position, the scanning in the latter aperture will be from top to bottom and left to right, or conventional scanning.

In the rotating modications illustrated in Figures l and 4, it is to be understood, of course, that the elements rotate with sufficient speed as to produce the eiect of a continuous image by means of the persistence of vision of the eye.

Having described my invention, I claim as new and desire to secure by Letters Patent:

l. In combination: means for forming an invisible image of electromagnetic waves, a series of spirally arranged rotating coils or antennae placed substantially in the focal plane of said invisible image, said coils being so arranged as to consecutively pass through the eld of said image, means for consecutively connecting said coil to a source of amplification, means for connecting the amplified current from said source consecutively to each of a, series of spirally arranged rotating glow lamps, whereby said lamps traverse or scan a visible image eld to produce a varying diiuse glow in said lield, constituting a corresponding visible image.

2. In combination: means for forming an invisible electromagnetic wave image, a rotating member in the field of said image, a plurality of wave-to-current converting mean's spirally arranged on one side of said rotating member, means for connecting consecutively each of said wave-to-current converting means to a source of amplification, means for consecutively supplying said amplified current to each of a plurality of current-to-light converting means spirally arranged on the opposite side of said rotating member during the time said current-to-light converting means traverses the field of a visible image, thus producing a visible image therein.

ALOYSIUS J. CAWLEY. 

